1. Austin Health, Melbourne, VIC.
2. Department of Surgery, University of Melbourne, Melbourne, VIC.
3. Department of Anaesthesia and Pain Management, Royal Melbourne Hospital, Melbourne, VIC.
4. Department of Pharmacology, University of Melbourne, Melbourne, VIC.
5. Department of Anaesthesia and Perioperative Medicine, Alfred Hospital, Melbourne, VIC.
6. Academic Board of Anaesthesia and Perioperative Medicine, Monash University, Melbourne, VIC.
7. Trials Group, Australian and New Zealand College of Anaesthetists, Melbourne, VIC.
8. Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, VIC.